Disgusted at Shell South Africa!!!

I would like to convey my disappointment and utter disgust with Shell Garage Protea Glen in Ext 11. I went there to fill up my tank with R200 and my petrol gauge did not register the litres of petrol, yet the money was debited from my account and my petrol gauge still remained on red. I didn't think much of it I pulled away and went home. The next day I repeated the same exercise and the same thing happened. So either their petrol pumps are not working and they *****ing from us customers or the pumps are rigged. I will never fill up at a Shell garage ever again.